John,
Try setting your texture filters, like so
_texture->setFilter(osg::Texture::MIN_FILTER,
osg::Texture::LINEAR_MIPMAP_LINEAR);
_texture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
Glenn Waldron / @glennwaldron
On Fri, Dec 9, 2011 at 8:14 AM, John Farrier <[email protected]> wrote:
> Hi,
>
> Prior to v3.0, I had a textured plane in my application. Since then (and
> perhaps the two aren't related, but...) my textured plane displays as more
> of a fuzzy checkerboard than the texture that I assigned. It must be
> something simple that I have done wrong. I've included my setup code
> below...a quick code review would be appreciated!
>
> Thank you!
>
> Cheers,
> John
>
>
> Code:
>
> {
> this->_switch = new osg::Switch();
> this->_transform = new osg::PositionAttitudeTransform;
> this->_transform->setScale(this->_scale);
> this->_transform->setPosition(this->_position);
>
> // Setup the texture
> osg::Image* const image = osgDB::readImageFile(this->_textureFile);
>
> if(image != NULL)
> {
> image->setDataType(GL_ALPHA);
> image->setPixelFormat(GL_ALPHA);
>
> this->_texture = new osg::Texture2D(image);
> this->_texture->setBorderColor(osg::Vec4(0, 0, 0, 0));
> this->_texture->setBorderWidth(0);
> this->_texture->setWrap(osg::Texture2D::WRAP_S, osg::Texture2D::MIRROR);
> this->_texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture2D::MIRROR);
>
> this->_texenv = new osg::TexEnv();
> this->_texenv->setMode(osg::TexEnv::MODULATE);
> }
>
> // Build the geometry to texture
> osg::Group* const group = new osg::Group;
>
> const float sizeUnit = 50000;
> const float sizeUnitMultiplier = 8.0f;
> const float sizeFinal = sizeUnit * sizeUnitMultiplier;
> const float sizeTexture = sizeUnitMultiplier * 0.25f;
>
> // left hand side of bounding box.
> osg::Vec3 top_left(-sizeFinal, sizeFinal, altitude);
> osg::Vec3 bottom_left(-sizeFinal, -sizeFinal, altitude);
> osg::Vec3 bottom_right(sizeFinal, -sizeFinal, altitude);
> osg::Vec3 top_right(sizeFinal, sizeFinal, altitude);
> osg::Vec3 center(0, 0, 0);
>
> osg::Geometry* const geom = new osg::Geometry;
>
> osg::Vec3Array* const vertices = new osg::Vec3Array(4);
> (*vertices)[0] = top_left;
> (*vertices)[1] = bottom_left;
> (*vertices)[2] = bottom_right;
> (*vertices)[3] = top_right;
> geom->setVertexArray(vertices);
>
> osg::Vec2Array* const texcoords = new osg::Vec2Array(4);
> (*texcoords)[0].set(0.0f, sizeTexture);
> (*texcoords)[1].set(0.0f, 0.0f);
> (*texcoords)[2].set(sizeTexture, 0.0f);
> (*texcoords)[3].set(sizeTexture, sizeTexture);
> geom->setTexCoordArray(0,texcoords);
>
> osg::Vec3Array* const normals = new osg::Vec3Array(1);
> (*normals)[0].set(0.0f,0.0f,1.0f);
> geom->setNormalArray(normals);
> geom->setNormalBinding(osg::Geometry::BIND_OVERALL);
>
> osg::Vec4Array* const colors = new osg::Vec4Array(1);
> (*colors)[0].set(this->_color[0], this->_color[1], this->_color[2],
> this->_color[3]);
> geom->setColorArray(colors);
> geom->setColorBinding(osg::Geometry::BIND_OVERALL);
>
> geom->addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
>
> osg::Geode* const geom_geode = new osg::Geode;
> geom_geode->addDrawable(geom);
>
> // set up the texture state.
> this->_texture->setDataVariance(osg::Object::STATIC);
> osg::StateSet* stateset = geom->getOrCreateStateSet();
> stateset->setTextureAttributeAndModes(0, this->_texture.get(),
> osg::StateAttribute::ON);
> stateset->setMode(GL_BLEND, osg::StateAttribute::ON);
> stateset->setTextureAttribute(0, this->_texenv.get());
> stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
>
> osg::PolygonMode* const polymode = new osg::PolygonMode;
> polymode->setMode(osg::PolygonMode::FRONT_AND_BACK,
> osg::PolygonMode::FILL);
> stateset->setAttributeAndModes(polymode, osg::StateAttribute::OVERRIDE |
> osg::StateAttribute::ON);
>
> group->addChild(geom_geode);
> this->_transform->addChild(group);
> this->_switch->addChild(this->_transform.get());
> }
>
>
>
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=44306#44306
>
>
>
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
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